Alex Mogilnera, Leah Edelstein-Keshetb, and Kerry Bloomc aDepartment of Neurobiology, Physiology and Behavior and Department of Mathematics, University of California at Davis, Davis, CA 95616; bDepartment of Mathematics and Institute of Applied Mathematics, University of British Columbia, Vancouver, British Columbia V6T 1Z4 Canada; and cDepartment of Biology, University of North Carolina at Cha...

The initial rates of isomerization between glucose 6-phosphate and fructose Q-phosphate catalyzed by Bacillus stearothermophilus pbospboglucose isomerase (PGI) were measured in both the forward and reverse reactions. Although B. stearothermophilus PGI is a tetrameric enzyme, the reaction rate vs substrate concentration curves for both reactions exhibited Michaelis-Menten kinetic behavior. This ...

Directionally selective single units have recently been found in the cerebral cortex of cats (Hubel, 1959; Hubel & Wiesel, 1959, 1962), the optic tectum of frogs and pigeons (Lettvin, Maturana, McCulloch & Pitts, 1959; Maturana & Frenk, 1963), and the retinae of rabbits (Barlow & Hill, 1963; Barlow, Hill & Levick, 1964). The term 'directionally selective' means that a unit gives a vigorous disc...

Binary descriptors of image patches provide processing speed advantages and require less storage than methods that encode the patch appearance with a vector of real numbers. We provide evidence that, despite its simplicity, a stochastic hill climbing descriptor construction process defeats recently proposed alternatives on a standard discriminative power benchmark. The method is easy to impleme...

Posterior glenohumeral joint dislocation is an uncommon injury and is associated with bony and ligamentous disruption. It requires prompt diagnosis and early treatment to prevent acute or recurrent instability and subsequent dysfunction. Reverse Hill-Sachs lesions associated with this injury are challenging to treat, and optimal treatment is controversial. Treatment methods can be divided into ...

Posterior dislocation of the shoulder is an unfrequent event that often occurs as a consequence of a direct trauma or epileptic crisis. Frequently the posterior dislocations are misunderstood, so they become chronic lesions. We reported a case of an acute posterior left shoulder dislocation with lesser tuberosity fracture and reverse Hill-Sachs lesions which involved more than 25% of the articu...

Posterior dislocation of the shoulder is rare, occurring in approximately 2% to 4% of all shoulder dislocations. Through a mechanism similar to that first characterized by Hill and Sachs, these dislocations have the potential to result in impaction fractures of the anterior aspect of the humeral head. These so-called reverse Hill-Sachs or McLaughlin lesions are estimated to occur in 86% of acut...